Rate or trade? : identifying winning ideas in open idea sourcing

Ivo Blohm (Institute of Information Management, University of St. Gallen, St. Gallen, Switzerland), Christoph Riedl (D’Amore-McKim School of Business and College of Computer and Information Science, Northeastern University, Boston, Massachusetts; and Institute for Quantitative Social Science, Harvard University, Boston, Massachusetts), Johann Füller (School of Management, University of Innsbruck, Innsbruck, Austria), Jan Marco Leimeister (Chair for Information Systems, Kassel University, Kassel, Germany; and Institute of Information Management, University of St. Gallen, St. Gallen, Switzerland)